Cannula holder



June 6, 1944.

Y. KONO CANNULA HOLDER Filed April 28,1939

YosH/M/rs u' Kama,

v INVENTOR.

BY f- W,

H 5 ATTORNEY.

Patented June 6, 1944 assure -Yoshimits'u KrinbQ-Hiroshimia, Japan; vested in 1; vib -AlienBroperty Gustodian t Apfiimataifaifi-u lssaiser arixi avas'si.

I 3 BClaims." (o1. neg-34st ,This invention relates-togdevices used fora}:- plying a cannula or similar; injection or draina e tubes and the like instrumentstoa bodyin predetermined positions forholding' the-same firmly with a minimum of vibration. t r p An additional object of, the invention; is ;to

provide a device wherein a cannula; may be guided into a body cavity and positively held at any desired angle and subsequently removed with a minimum of effort. j t Referring tothe drawing: Fig. 1 is a plan view ofthe cannula holding device in operative position; V v v 1 Fig. 2 is a side elevation of the device of Fig. 1 parts being broken away; and t Fig.3 is a fragmentary'view on the line 33, Fig.1., I t

Anyone. who; ever had to -make injections through the skin will admit that difficulties are encountered-in. various ways. :'.':Whether a plaincannula, or, any-votherqsuitable-instrument is used, such as ahypodermic needle, it requires considerable experience to hold any such instrument steadily and properly pointed to accomplish a requiredinjection to the proper location and inaproperdirectiorn, Eventhough: it may be said that persons using such instruments should be expected tohaveithe necessary skill to assure a proper handling, it is believed that the device disclosed herewith will be of great help to'eliminate, orJ-reduce, undue vstrain on the nerves of such persons.

- Particularly, it should be possible to eliminat any bending of any needle-like member to an'extent to prevent any breaking.

Assuring-a more steady'application of any instrument should also eliminate any unduebend ing to any extent that might otherwise, without such a device, result-in any undue "deflection of the needle during an inj'eotiom' i The main frame of the device consists of" two halves and fifl'connectedby the hinge portions 8 and 5.. This frame is preferably of a form that allows a clear observation of a suitably large surface about a pointat which an injection'isto be made'and upon which thisideviceis to be used: the two'halves5 and 5' are each Ll-shaped, the ends of one abutting against the ends [of the other in closedand operative position,"a's will be clear from the illustration. f V. I f v For the purpose'of properly siipporting fand holding theffraine on a'surfacefsllch as the skin otarat tltb a doc hef diust h e s! and 83- are prqv fi with fr ction wn a tine mans 9 and 9', which maybeof rubber, not

any other suitable material 'Ihe'legs 8' 8' pass through holes "I'| at the corners of: theirame, the 'holesbeing provided at an angle through the frame for pl-l poses described more fully later on.

Adjusting screws l0l0' serve to hold the legs in adjusted position within the frame. a 1

A split tubular memberisprovidedat a suit able point of the frame-having an extension end i-l projecting from the underside of the frame for an appropriate distance and'forming'a guiding passage 2. t

Also projecting from the underside oftheframe isa guiding or locating post 4, which is of approximately the same length as the tubular guiding member'l and is preferably arrangedon the longitudinal dividing axis of the main frame along the line of the abutment between the two halves. 1 I IQ A portion of the post forms thepivot connection' for the hingeportions 69-6, f

The nearness of t the looating post to the guid ing-passage- 2, andthe particular position of this post with respect to the longitudirial axis serves several purposes. I 7 v In the first place, it should any'adjustment of the device, by means of the four legs shown, is notexactly easy, when itis realized that the guiding-passage will be .particularly advantageous andusefulbecause it may be adjusted to desiredinclined directions,

A tilting of the main frame by means of any of the four legs'would generally bring the passage to various locations and points away from the predetermined position and direction with respect to the intended place of'injection, since the legs are, and should be, a considerable distance fromthe passage.

. A tilting of t t tttttte ttut ttaiets' would lift the passage. away from an already es'tablished'location'for an injection...

Thepost, on the other hand, is intended to'be comparatively nearer to the passage, than shown abutment between the U-halves of the main frame, whereby any sort oftilting ineither direction sldewise of the axis always retains the same stan e, betwee the 1 9 t. and the; passage at ofjthePost oniany and near the pointof contactsurface.

7 By making the distance -betweie n the postfand the passage as short as possible, any tilting in any direction will but slightly affect the distance between post and passage at the point of contact with respect to the point of injection.

The post may therefore, quite properly, be called the primary means for establishing contact and location, such as on the skin of a patient of a doctor.

It should furthermore be taken into consideration that the passage has been shown as of rather wide and large size, and the material of the tube has been shown proportionally thick, being shown in Fig. 3 with cross-hatching in cross-section, or rather longitudinal section'as far as the axis of the tube is concerned, the thickness of the tube being really only for .the sake. of clearness of the section-lines, the whole .show

ing of thickness or size being just foripurposes of clear detailing in the illustration,'though a needle, or instrument of the type to be used with this devicemay in itself be very slender and thin, and only requires a small passage; the tube would on'lyhaveto' be of thin material, and the tube would bepreferably rather snugly fitting.

From al-l 'this'f-it should be understood that the tube may beof such a-smallproportion as not to materially obstruct any view, so that the point of injection-may easily be observable while the tube'is' practically directly over the point of injectio'mbr the point of-injection practically dired'rdnderthe tube end.

Having-provided the double-U -shaped form for the main frame, makes it possible to have the tube-end'under convenient observation through the comparatively large opening in the main frameat-all times, which is one of "the strong featuresofthis-invention.

"fIdthis-feature is added that an instrument can be guided bythe tube close to the surface While the tube and main frame is firmly pressed to-, an'd:so disposed on, a tauntly stretchedsurface, which any person'- skilled in the art will appreiiate-as ofgreat advantage for the purpose intendedand specified herewith.

ontacting--and positioning may thus quite positively be predetermined in definite'locations, such as "desired places nearthespine of a person. P

'---Theloc'a -'ng post may thus also be used for feeling and locating a proper position "at which ah injection is to be made.

Once having thus predetermined a desired position and location for-an injection, such a positionanddocation is easily retained by means of the'postwhile the main frame is then moved to a desiredinclination to bring the'passage into the-proper' direction'for the intended injection. At this juncture, or stage of operation, the

post serves as a temporary supportwhiie the four legs are adjustedfor the more permanent supportof=the'main-frame'preparatory to the actual injection operation.

Naturally, an operator will choose one leg after the -other 'inthe order found most convenient andin which they will help to maintain the adjusted position -of the main frame most conveniently.

'Using the -locating post thus as a primary means for establishing contact and location with the surfaceupon which the device is to be used, the postfacilitates definitely a placing of the device am'thregard to the point at which an injection. is to' be; made, preparatory to adjusting and setting the legs 8-8. I ,v,

32Usir'1gi the locating post'as a'primarymeans' for a V l 1 .11.

establishing contact with the surface upon which the device is to be used, the post also helps to retain the device in the adjusted position while the downwardly and outwardly spreading legs are used to stretch the surface material in all directions laterally about the guiding tube and its passage.

In other words, and in short terminology, the post 4 is used as a preliminary support and guide preparatory to the proper placement of the tube with'respect to the proposed site and direction of operation, and may also be used to steady the ,device with the tube in proper operative alignment preparatory to, and until, proper adjustment of the legs can be brought about.

.It should, be understood that the post may be firmly pressed into the surface and into the flesh to such an extent as to assure a positive retaining ofthe main frame in the desired position, while the skin and flesh around the post and tube will yield sufliciently to allow a desired stretching -of the skin. Such astretching and drawing can be accomplished from the'moment that the paddeden'ds of the legs make contact with the surface of the skin, and the drawing and stretching may be continued as long as the skin and flesh yield, toassure a suitably taut surface for the-injection. i

From the above description and from the illustration, it should be clear that the downwardly and outwardly spreading legs will assure exactly such a result, since the contacting meansB-Q of the legs 8-8' separate more and more as the legs are pushed outwardly further and further.

After the device has been adjusted so as to form a firmly established base, any co-operating instrument, outlined at l2 in Fig. 3, is simply inserted into and passed through the passage 2 of the tubular member l. v a 1 In cases where it is desirable, thedevice may readily be removed while the instrument-is still in operating position, since the device may be opened as indicated in dotted lines inFig. l. l -For injection along a spinal column' this device is of particular aid, since the. locating post can be used for finding .the open spaces of the spine, and thelegs can be adjustedtolbring the guiding tubular. member to the. desired angle for. a proper-injection into the desired-space with regard to the column.

The stretching of the .skin

legs furthermore, facilitates the injection. of. any.

instrument in such a manneras to reduce, if. not make impossible, anylbending 10f the inserted ins strument, as also any slipping ofthepperators hand, on the surface of the skin, so that misa e ts 9 in t on m practi lyhe. a e: enad- 1 Having thus described my invention, I claim;

Y 1. In a deviceof the class described a frame having hingedly connected portions embodyin a guiding tubular member, a locating means on the frame in operative relation to the tubular member for a preliminary contact with the sur-{ face upon which the device is to be used, and supporting legs mounted on the frame in ,down' wardly and outwardly inclined positions with their contacting ends spreading about the end'of the tubular member. j f f 2; In a device of the class described, a frame having hingedly connected portions embodying hinge,- a locating means with an axis concentric with-the axis of the hinge and in cooperative --re-'-" lation to the tube for preliminary contact with the surface upon which the device is to be used, supporting legs mounted slidingly in the frame with their supporting contacting ends spreading about the tube end, and means for adjustably holding the legs in the frame.

3. In a device of the class described, a frame embodying a guiding tube extending downwardly from the frame, a locating means forming a support for the frame in operative relation to the tube, supporting legs slidably mounted in the frame at angles to spread about the tube-end, gripping contacting means at the ends of the legs, and means for adjustably holding the legs in the frame.

YOSHIMITSU KONO. 

